Get premium membership and access questions with answers, video lessons as well as revision papers.
It is the process by which nature selects organisms best suited to environment allows them to reproduce and pass suitable traits to their offspring and reject the poorly suited hence they die before sexual maturity hence becoming extinct.
jim items answered the question on September 21, 2018 at 10:26
- Name the structures in the phloem that are involved in the translocation of sugars
(Solved)
Name the structures in the phloem that are involved in the translocation of sugars
Date posted: September 21, 2018. Answers (1)
- Describe how the oxygen in the alveolus reaches the red cells
(Solved)
Describe how the oxygen in the alveolus reaches the red cells
Date posted: September 21, 2018. Answers (1)
- State the function of the following parts of a nephron
i)loop of Henle
ii)Distal convoluted tubule(Solved)
State the function of the following parts of a nephron
i)loop of Henle
ii)Distal convoluted tubule
Date posted: September 21, 2018. Answers (1)
- Name the organelle that is likely to be found in abundance in;
a)An enzyme secreting cell
b)cells producing lipid related secretions
c)Areas where the cells have raptured.(Solved)
Name the organelle that is likely to be found in abundance in;
a)An enzyme secreting cell
b)cells producing lipid related secretions
c)Areas where the cells have raptured
Date posted: September 21, 2018. Answers (1)
- State the main significance of short food chains in an ecosystem.(Solved)
State the main significance of short food chains in an ecosystem.
Date posted: September 21, 2018. Answers (1)
- State two features of neurons that increase the rate of impulse transmission
(Solved)
State two features of neurons that increase the rate of impulse transmission
Date posted: September 21, 2018. Answers (1)
- Explain how the following occur during gene mutation
i)Insertion
ii)Substitution
(Solved)
Explain how the following occur during gene mutation
i)Insertion
ii)Substitution
Date posted: September 21, 2018. Answers (1)
- How do identical twins and fraternal twins arise? Explain.(Solved)
How do identical twins and fraternal twins arise? Explain.
Date posted: September 21, 2018. Answers (1)
- Name the organelle where
a)Kreb’s cycle take place in a cell
b)Where are lysosomes synthesized(Solved)
Name the organelle where
A) Krebs's cycle take place in a cell
B)Where lysosomes are synthesized
Date posted: September 21, 2018. Answers (1)
- State the function of the following structures in the human ear:a)Eustachian tube b)Semi-circular canals(Solved)
State the function of the following structures in the human ear:
a)Eustachian tube
b)Semi-circular canals
Date posted: September 21, 2018. Answers (1)
- State five preventive measures of schistosomiasis in human beings(Solved)
State five preventive measures of schistosomiasis in human beings
Date posted: September 20, 2018. Answers (1)
- State the most suitable biological tool for collecting the following organisms
i)Ants from a tree trunk.
ii)A moth from a coffee farm.
(Solved)
State the most suitable biological tool for collecting the following organisms
i)Ants from a tree trunk.
ii)A moth from a coffee farm.
Date posted: September 20, 2018. Answers (1)
- How does sunken stomata help in lowering transpiration.(Solved)
How does sunken stomata help in lowering transpiration.
Date posted: September 20, 2018. Answers (1)
- Name the vitamin which plays an important role in the formation of blood cells.(Solved)
Name the vitamin which plays an important role in the formation of blood cells.
Date posted: September 20, 2018. Answers (1)
- Give two better ways of measuring the rate of photosynthesis other than counting bubbles produced per minute.
(Solved)
Give two better ways of measuring the rate of photosynthesis other than counting bubbles produced per minute.
Date posted: September 20, 2018. Answers (1)
- Bivalent, synapsis and crossing over are terminologies used in cell division.a)Name the stage of meiosis in which the above process occurb)Distinguish between synapsis and crossing...(Solved)
Bivalent, synapsis and crossing over are terminologies used in cell division.
a)Name the stage of meiosis in which the above process occur.
b)Distinguish between synapsis and crossing over.
Date posted: September 20, 2018. Answers (1)
- Explain why a baby loses more heat per weight than an adult when exposed to the same environmental conditions?(Solved)
Explain why a baby loses more heat per weight than an adult when exposed to the same environmental conditions?
Date posted: September 20, 2018. Answers (1)
- How does the heart increase blood flow to some parts of the body during strenuous exercise.State two ways.(Solved)
How does the heart increase blood flow to some parts of the body during strenuous exercise.State two ways.
Date posted: September 20, 2018. Answers (1)
- Outline five mechanisms of excretion in terrestrial green plants
(Solved)
Outline five mechanisms of excretion in terrestrial green plants
Date posted: September 20, 2018. Answers (1)
- State the importance of the following features of a mammalian lungs
i)Pleural fluid
ii)Spongy and elastic
(Solved)
State the importance of the following features of a mammalian lungs
i)Pleural fluid
ii)Spongy and elastic
Date posted: September 20, 2018. Answers (1)